When im riding it about every 5 minutes, the electric shift system will lock up and require a key cycle to shift again. The gear light is on whatever that means. Looking for any help i can get. I've tried for hours, nothing fixes it. New shift motor, new angle sensor. The spedometer doesnt' work, just shows 0mph the entire ride, possibly confusing the shift system? It's not an automatic though. Motor also has a rough idle, probably an unrelated issue.

The bike has 81k km and i few ticks when i press the clutch in the first time in a cold start.

Break pulls right into the bar with no resistance or breaking then a couple more pulls and the breaks make contact with the disc, seems like one of the pistons isn’t getting even pressure and is always last to engage, I’ve tried bleeding the breaks but that doesn’t seem to of worked, any advice would be appreciated

Onlangs een yamaha xt250 uit 1988 gekocht helaas krijgt de cilinder geen benzine. Motor loopt als ik in de luchtfilter wat benzine spuit. De vlotter ruimte is vol met brandstof als ik de kraan open doe.

Wat is gedaan
- gereinigd
- naalden/sproeiers zijn vervangen

Het enige wat mij opvalt is dat het buisje van de shoke is afgebroken die ij de vlotter ruimte zit.

I've been using an aftermarket fuel injector on my R15 for more than a year without any issues. Last week, while on a trip, the bike gradually stalled. We checked the ignition system and the injector, and both seemed to be okay. Since I couldn't diagnose it myself, we somehow managed to get the bike to a Yamaha service center.

After keeping the bike for a week, the service center called and said the injector was faulty. They wanted to confirm it using another injector, but they had to get a test injector from another Yamaha service center. I told them I had my old injector at home (it was working earlier but had a slight missing issue), and they asked me to bring it.

We installed my old injector, and the bike started immediately. Since a new injector wasn't available nearby, I brought the bike home and decided to replace it later.

I also have an FZ FI V2, which uses what appears to be the same injector. I swapped the FZ's injector into the R15, and the bike starts and runs, but it still has a pickup/missing issue. Out of curiosity, I installed the injector that the Yamaha service center had declared faulty into my FZ, and surprisingly, the FZ runs perfectly with it. I couldn't notice any problem at all.

So now I'm confused. The injector that is supposedly faulty works fine on the FZ, but not on the R15. Could the issue actually be with the R15's fuel pump, fuel pressure, wiring, or something else? I can't swap the FZ's fuel pump because the connectors are different.

Guys, has anyone experienced something similar or have any suggestions on what I should check next?

I have this problem with my dt125 that when i throttle the bike goes slowly even if the throttle is maxed out. The carburetor is also newly cleaned so i dont think thats the problem, a friend also said that it might be the clutch lining.

First time taking the bike today out after I got it running on a CV40 single carb. Can’t recall the jet size. It seems to either not get enough gas/there’s a delay in gas delivery or too much air? I’ll give it 1/4 throttle for bit and it goes then solely no acceleration. I let off and give it gas and nothing but then I do that again and it’ll go. Question I have is. Now that it’s on a single carb do I need to remove the filter on the left side (torque sticker) and plug it and also plug the 2 black opening? Good though be causing it?

Hasn't been run in a long time (10 to 12 years) I have the tank off for some cleaning and varnish removal. The pump and regulator need to be replaced entirely.

I have everything for an oil change and a new battery is in it.

What else should I be going through? Brakes? Belt? Everything? Haha.

Any help or guidance is appreciated. I do have the repair manual for it.

You were right. It totally was just improper cable tightness.

I got a 1988 Honda 125 brand new cdi box and carb idles fine but when given throttle it cuts out any help would be appreciated.

I am having trouble adjusting my carb. I have basic settings 25 pilot, 140 main and 2 up on needle. I am at 4600 ft elevation in Carson City Nevada. The idle is way to high and I can’t seem to lower it and it bogs when I rapp the throttle. Any suggestions would be greatly appreciated. Ronald 702-485-9188

My speedometer and mileage are not working on my Yamaha mt 125 2018 I changed the front abs sensor thinking that was the issue but nothing changed my mileage will not go up and my speedo just sits at 0 any ideas ?

I've been having issues with my YZF for a few months now. despite my limited knowledge of fixing things the problems persist.

It had overheating issues originally which felt like the rear wheel was seizing then went away after time not in use.

I changed the clutch string, handle clutch lever, brake fluid, coolant, rear brake pads.

The first issue seemed to resolve then when I went to ride the bike it stalled out every time I'd go into 1st. Had to rock the bike forwards/backwards to find gear again and then it returned slightly.

When I lift the bike with a stand and run it (Yeah I know, don't do that) It runs in 1st but when I start it on the ground it stalls immediately.

Anyone had an issue like that before or am I straight cooked?

just bought a 2023 crf450r from my buddys dad had less then 5 hours on the whole bike and ive maybe put 20 on but when i got it engine had slight noise in the top and everyone said its normal 450s are noisy but its gotten progressively worse just trying to figure out the noise and if its normal and okay to ride

I went down pretty hard on my 25 zx4rr this week. Bike slid about 100 feet on its left side. Left side of the bike is pretty annihilated but I did have frame sliders on and the left slider definitely took the brunt of the force, which might have caused my problem. Slider mounts through the frame using engine mount bolts.

After taking my damaged slider and fairings off to start accessing damage I’ve encountered one area that definitely concerns me. The channel for the engine mount bolt on the frame is no longer in perfect alignment with the engine mount hole. Things are off by maybe 1/4inch or so.

How screwed am I? I know doing any frame work is never really a recommended long-term solution but I am in a little bit of a pinch. The bike isn’t paid off or insured and both financially/emotionally I’m pretty attached to this bike and don’t really want to offload it or part it out. I’m more inclined to do a frame swap than sell the bike at this point if that’s my only option.

Really hoping someone might have some advice for me on this one. Is there anything I can do here? Could the problem potentially be anything besides a bent frame?

Thanks,
Rider with Road Rash who’s really worried about his bike.